^^^^ Most Mobo's dont have a feature to turn off LED's in the BIOS....have you actually looked in a BIOS / UEIFI ? I know my Nforce Boards didnt and neither did my X58 Vanilla or Classified, nor does my RIVE....

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Introducing me n my OCD to Watercooling, is like taking an Alcoholic to an "all you can drink" Beach Bar in Mexico